Synchronous Motors Which of the following motors is non self starting? Squirrel cage induction motor Dc series motor Wound rotor induction motor Synchronous motor Squirrel cage induction motor Dc series motor Wound rotor induction motor Synchronous motor ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors When a synchronous motor is on no load, the torque angle is about ________ 45° electrical 0° electrical 30° electrical 90° electrical 45° electrical 0° electrical 30° electrical 90° electrical ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The operating speed of a synchronous motor can be changed to new fixed value by changing the load using brakes changing frequency changing the supply voltage changing the load using brakes changing frequency changing the supply voltage ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors The maximum speed variation in a 3 phase synchronous motor is 10 percent Zero 2 percent 4 percent 10 percent Zero 2 percent 4 percent ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors In case one phase of a three-phase synchronous motor is short-circuited the motor will take less than the rated load run at 2/3 of synchronous speed run with excessive vibrations not start take less than the rated load run at 2/3 of synchronous speed run with excessive vibrations not start ANSWER DOWNLOAD EXAMIANS APP
Synchronous Motors Power factor of a synchronous motor is unity when None of the listed here The armature current is zero The armature current is maximum The armature current is minimum None of the listed here The armature current is zero The armature current is maximum The armature current is minimum ANSWER DOWNLOAD EXAMIANS APP
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